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September 15th, 2006, 09:00 PM
#1
Telnet issues
I couldnt find a better place to put this but I am pretty sure it is related to the network or my PC somehow.
I am telneting into a Cisco 3750 switch and the timeout on the switch is set to 5 minutes.
It will randomly come up with the below message after a sporadic amount of time. It could be a minute it could be two.
It will also happen when I am in the middle of typing commands. It just started happening on my laptop and havent see it before. I dont know if it is happening to anyone else.
Code:
*
*
* Line timeout expired
*
*
Connection to host lost.
Specs:
Dell Laptop
Windows XP Pro
Hard wired into network
Tried from different VLANs
timing is sporadic < 5min
switch timeout is set to 5 minutes
Tried by doing Start>Run>cmd> telnet switchname
Tried with Putty
Same result on both
let me know what else you need to know.
Duct tape.....A whole lot of Duct Tape
Spyware/Adaware problem click
here
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September 15th, 2006, 09:15 PM
#2
couple of things could be wrong, bad cable, bad nic, bad switch port.. Are the speed/duplex settings correct? Try not to use auto/auto on both ends. Fixate the speed/duplex on the nic and the switchport..
Just some random things i would try
Oliver's Law:
Experience is something you don't get until just after you need it.
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September 15th, 2006, 10:28 PM
#3
I think the first question would be if it happens from other systems on the network as well
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September 16th, 2006, 12:33 AM
#4
Are you using exec-timeout or session-timeout? For troubleshooting purposes I would set your exec-timeout to 0 and see if you still get disconnected.
Example.
line vty 0 4
exec-timeout 0
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September 18th, 2006, 12:15 PM
#5
Sorry for taking so long to get back... One of our other Net Admins does have the same issue. I have tried a different port, a different switch and tried both auto and 100/full.
I first wanted to believe it was an application issue until it did it with both putty and the telnet command.
Net2
My settings are as follows:
line vty 5 15
exec-timeout 5 0
Doesnt that mean it will timeout after 5 minutes?
Duct tape.....A whole lot of Duct Tape
Spyware/Adaware problem click
here
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September 18th, 2006, 03:44 PM
#6
I also am looking to see what others use for connecting to their switches.... Please dont ask me why we cant setup SSH on these switches.
[cynicism] apparently its a good idea to just throw every thing on the network in clear text.[/cynicism]
as stated i have tried just telnet and putty. looking for somethign a bit more robust
Duct tape.....A whole lot of Duct Tape
Spyware/Adaware problem click
here
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September 18th, 2006, 03:55 PM
#7
SecureCRT by Vandyke has always been a favorite of mine, but then again, it's not free though
http://www.vandyke.com/products/securecrt/index.html
There are two rules for success in life:
Rule 1: Don't tell people everything you know.
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September 19th, 2006, 02:56 AM
#8
What are your line settings for vty 0 4? Posting your whole configuration minus the actually ip addresses would be a great help.
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